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• Barcode to Product Name Converter

  - by spagetticode

  Hi All, We are designing a mobile shopping system. The camera on the phone will read the barcode and then we have to convert the barcode to a standard product name in order to save it to our database. We are saving it to our database because we are connecting to a web service of local e-commerce sites to get their price about the related product. We are sending the product name to get the price from them, so that the user can see the prices, compare and buy. We cannot send barcode number to get the data from the e-commerce sites because some sites do not have the info of the barcode number. I have to somehow get the product name by only knowing the barcode. Google returns the result when barcode number is searched. But how am I going to parse the data? or how am I going to know which answer of google search best suits my input? Is there a site that sells barcode and product name data match? We are designing the system with C# Thanks alot.

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• C# Event Handlers Using an Enum

  - by Jimbo

  I have a StatusChanged event that is raised by my object when its status changes - however, the application needs to carry out additional actions based on what the new status is. e.g If the new status is Disconnected, then it must update the status bar text and send an email notification. So, I wanted to create an Enum with the possible statuses (Connected, Disconnected, ReceivingData, SendingData etc.) and have that sent with the EventArgs parameter of the event when it is raised (see below) Define the object: class ModemComm { public event CommanderEventHandler ModemCommEvent; public delegate void CommanderEventHandler(object source, ModemCommEventArgs e); public void Connect() { ModemCommEvent(this, new ModemCommEventArgs ModemCommEventArgs.eModemCommEvent.Connected)); } } Define the new EventArgs parameter: public class ModemCommEventArgs : EventArgs{ public enum eModemCommEvent { Idle, Connected, Disconnected, SendingData, ReceivingData } public eModemCommEvent eventType { get; set; } public string eventMessage { get; set; } public ModemCommEventArgs(eModemCommEvent eventType, string eventMessage) { this.eventMessage = eventMessage; this.eventType = eventType; } } I then create a handler for the event in the application: ModemComm comm = new ModemComm(); comm.ModemCommEvent += OnModemCommEvent; and private void OnModemCommEvent(object source, ModemCommEventArgs e) { } The problem is, I get a 'Object reference not set to an instance of an object' error when the object attempts to raise the event. Hoping someone can explain in n00b terms why and how to fix it :)

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• Extjs - Loading Grid when call

  - by Oxi

  I have form and grid. the user must enter data in form fields then display related records in the grid. I want to implement a search form, e.g: user will type the name and gender of the student, then will get a grid of all students have the same name and gender. So, I use ajax to send form fields value to PHP and then creat a json_encode wich will be used in grid store. I am really not sure if my idea is good. But I haven't found another way to do that. The problem is when I set autoLoad to true in the store, the grid automatically filled with all data - not just what I asked for - So, I understand that I have to set autoLoad to false, but then the result not shown in the grid even it returned successfully in the firebug! I don't know what to do. My View: { xtype: 'panel', layout: "fit", id: 'searchResult', flex: 7, title: '<div style="text-align:center;"/>SearchResultGrid</div>', items: [ { xtype: 'gridpanel', store: 'advSearchStore', id: 'AdvSearch-grid', columns: [ { xtype: 'gridcolumn', dataIndex: 'name', align: 'right', text: 'name' }, { xtype: 'gridcolumn', dataIndex: 'gender', align: 'right', text: 'gender' } ], viewConfig: { id : 'Arr' ,emptyText: 'noResult' }, requires: ['MyApp.PrintSave_toolbar'], dockedItems: [ { xtype: 'PrintSave_tb', dock: 'bottom', } ] } ] }, My Store and Model: Ext.define('AdvSearchPost', { extend: 'Ext.data.Model', proxy: { type: 'ajax', url: 'AdvSearch.php', reader: { type: 'json', root: 'Arr', totalProperty: 'totalCount' } }, fields: [ { name: 'name'}, { name: 'type_and_cargo'} ] }); Ext.create('Ext.data.Store', { pageSize: 10, autoLoad: false, model: 'AdvSearchPost', storeId: 'AdvSearchPost' });

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• Did we always have to register to download the Java 5 JDK, or is this new Oracle fun?

  - by Ukko

  I could swear that just a couple of months ago I downloaded a copy of the Java 1.5 SE JDK and I did not have to give them information on my first born. Today, I had to go through the register-and-we-will-send-you-a-link-someday dance. I have not received the link yet, so I thought I would ask about it here. What is special about the Java 5 JDK? I can get 6 just by clicking, is this a stick to get us to migrate to Java 6? Am I just not remembering doing this before? What marketing genius thought this would be a value add for Java? "If we make them sweat for the JDK they won't just delete it willy-nilly the next time?" Does everyone picture the people designing systems like this as mustache twirling Snidely Whiplash clones like I do? Did I just miss the link for the Secret Squirrel route to the download page? Finally, I am in the U.S. so I should not have to worry about export restrictions. Any thoughts?

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• Implementation of MVC with SQLite and NSURLConnection, use cases?

  - by user324723

  I'm interested in knowing how others have implemented/designed database & web services in their iphone app and how they simplified it for the entire application. My application is dependent on these services and I can't figure out a efficient way to use them together due to the (semi)complexity of my requirements. My past attempts on combining them haven't been completely successful or at least optimal in my mind. I'm building a database driven iphone app that uses a relational database in sqlite and consumes web services based on missing content or user interaction. Like this hasn't been done before...right? Since I am using a relational database - any web services consumed requires normalization, parsing the result and persisting it to the database before it can be displayed in a table view controller. The applications UI consists of nested(nav controller) table views where a user can select a cell and be taken to the next table view where it attempts to populate the table views data source from the database. If nothing exists in the database then it will send a request via web services to download its content, thus download - parse - persist - query - display. Since the user has the ability to request a refresh of this data it still requires the same process. Quickly describing what I've implemented and tried to run with - 1st attempt - Used a singleton web service class that handled sending web service requests, parsing the result and returning it to the table view controller via delegate protocols. Once the controller received that data it would then be responsible for persisting it to the database and re-returning the result. I didn't like the idea of only preventing the case where the app delegate selector doesn't exists(released) causing the app to crash. 2nd attempt - Used NSNotificationCenter for easy access to both database and web services but later realized it was more complex due to adding and removing observers per view(which isn't advised anyways).

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• GUI Agent accepts statuses from Daemon and shows it using progress indicator

  - by Pavel

  Hi to all! My application is a GUI agent, which communicate with daemon through the unix domain socket, wrapped in CFSocket.... So there are main loop and added CFRunLoop source. Daemon sends statuses and agent shows it with a progress indicator. When there are any data on socket, callback function begin to work and at this time I have to immediately show the new window with progress indicator and increase counter. //this function initiate the runloop for listening socket - (int) AcceptDaemonConnection:(ConnectionRef)conn { int err = 0; conn->fSockCF = CFSocketCreateWithNative(NULL, (CFSocketNativeHandle) conn->fSockFD, kCFSocketAcceptCallBack, ConnectionGotData, NULL); if (conn->fSockCF == NULL) err = EINVAL; if (err == 0) { conn->fRunLoopSource = CFSocketCreateRunLoopSource(NULL, conn->fSockCF, 0); if (conn->fRunLoopSource == NULL) err = EINVAL; else CFRunLoopAddSource(CFRunLoopGetCurrent(), conn->fRunLoopSource, kCFRunLoopDefaultMode); CFRelease(conn->fRunLoopSource); } return err; } // callback function void ConnectionGotData(CFSocketRef s, CFSocketCallBackType type, CFDataRef address, const void * data, void * info) { #pragma unused(s) #pragma unused(address) #pragma unused(info) assert(type == kCFSocketAcceptCallBack); assert( (int *) data != NULL ); assert( (*(int *) data) != -1 ); TStatusUpdate status; int nativeSocket = *(int *) data; status = [agg AcceptPacket:nativeSocket]; // [stWindow InitNewWindow] inside [agg SendUpdateStatus:status.percent]; } AcceptPacket function receives packet from the socket and trying to show new window with progress indicator. Corresponding function is called, but nothing happens... I think, that I have to make work the main application loop with interrupting CFSocket loop... Or send a notification? No idea....

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• Unable to add FromName to e-mail using cdosys in SQL Server 2008

  - by Alex Andronov

  I have a piece of cdosys code which runs correctly and generates e-mail with my SQL Server 2008 server talking to a MS Exchange 2003 Server. However the from name is not appearing on the e-mails when they arrive. Is there a fault in the code is it not possible this way? Thanks in advance usp_send_cdosysmail @from varchar(500), @to text, @bcc text , @subject varchar(1000), @body text , @smtpserver varchar(25), @bodytype varchar(10) as declare @imsg int declare @hr int declare @source varchar(255) declare @description varchar(500) declare @output varchar(8000) exec @hr = sp_oacreate 'cdo.message', @imsg out exec @hr = sp_oasetproperty @imsg, 'configuration.fields("http://schemas.microsoft.com/cdo/configuration/sendusing").value','2' exec @hr = sp_oasetproperty @imsg, 'configuration.fields("http://schemas.microsoft.com/cdo/configuration/smtpserver").value', @smtpserver exec @hr = sp_oamethod @imsg, 'configuration.fields.update', null exec @hr = sp_oasetproperty @imsg, 'to', @to exec @hr = sp_oasetproperty @imsg, 'bcc', @bcc exec @hr = sp_oasetproperty @imsg, 'from', @from exec @hr = sp_oasetproperty @imsg, 'fromname','A From Name' exec @hr = sp_oasetproperty @imsg, 'subject', @subject -- if you are using html e-mail, use 'htmlbody' instead of 'textbody'. exec @hr = sp_oasetproperty @imsg, @bodytype, @body exec @hr = sp_oamethod @imsg, 'send', null -- sample error handling. if @hr <>0 select @hr begin exec @hr = sp_oageterrorinfo null, @source out, @description out if @hr = 0 begin select @output = ' source: ' + @source print @output select @output = ' description: ' + @description print @output end else begin print ' sp_oageterrorinfo failed.' return end end exec @hr = sp_oadestroy @imsg

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• ASP Function that returns result from stored procedures

  - by Brad

  I am working on a project that requires me to hop into to separate DB's. So I have figured that I need to have multiple functions inside of my VB page. The only problem I am having,is I am not to sure how to get this all accomplished. So far I have figured out the overall structure, just need help implementing that structure. Here is my idea: The main Function would call two other functions. We can Call them Sub Function 1 and Sub Function 2. So, the main Function takes the saved sessions information for the E-mail address and dumps in into Sub Function 1. It needs to open up a new connection to the db/stored procedure and RUN the following procedure and then return the result. Here is the stored procedure and what i think is correct. CREATE PROCEDURE WEB_User ( @EMAIL_ADDRESS varchar(80) = [EMAIL_ADDRESS] ) AS SELECT MEMBER_NUMBER FROM WEB_LOGIN WHERE EMAIL_ADDRESS = @EMAIL_ADDRESS So my question is, what is the function suppose to look like? how do I send the session information to the procedure? and finally, how do I return the stored procedure results and push back into the main function so it can be carried into sub function 2? Thank you in advance for your help... I really appreciate it!

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• PHP rewrite to included file - is this a valid script?

  - by Poni

  Hi all! I've made this question: http://stackoverflow.com/questions/2921469/php-mutual-exclusion-mutex As said there, I want several sources to send their stats once in a while, and these stats will be showed at the website's main page. My problem is that I want this to be done in an atomic manner, so no update of the stats will overlap another one running in the background. Now, I came up with this solution and I want you PHP experts to judge it. stats.php <?php define("my_counter", 12); ?> index.php <?php include "stats.php"; echo constant("my_counter"); ?> update.php <?php $old_error_reporting = error_reporting(0); include "stats.php"; define("my_stats_template",' <?php define("my_counter", %d); ?> '); $fd = fopen("stats.php", "w+"); if($fd) { if (flock($fd, LOCK_EX)) { $my_counter = 0; try { $my_counter = constant("my_counter"); } catch(Exception $e) { } $my_counter++; $new_stats = sprintf(constant("my_stats_template"), $my_counter); echo "Counter should stand at $my_counter"; fwrite($fd, $new_stats); } flock($fd, LOCK_UN); fclose($fd); } error_reporting($old_error_reporting); ?> Several clients will call the "update.php" file once every 60sec each. The "index.php" is going to use the "stats.php" file all the time as you can see. What's your opinion?

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• curl post picture multipart/form-data, php cURL need help!

  - by user331071

  I'm trying to upload a picture to a specific website using php cURL but I don't really understand what parameters do I need to send because the data looks a bit weird . Here is what i got with the http analyzer Type : multipart/form-data; boundary=---------------------------182983931283 -----------------------------182983931283 Content-Disposition: form-data; name="file"; filename="Blue hills.jpg" Content-Type: image/jpeg Here appears the souce of the image itself like "ÿØÿàÿØÿàÿØÿàÿØÿàÿØÿàÿØÿà" -----------------------------182983931283 Content-Disposition: form-data; name="action" images -----------------------------182983931283 Content-Disposition: form-data; name="anonymous_email" Y -----------------------------182983931283 Content-Disposition: form-data; name="site_id" 1 -----------------------------182983931283 and so on other parameters. The issue that I have is that I don't understand what is the boundary, where do I get it from (because it doesn't appear in the html document that generates the POST and how should I make the post . If you would give me a simple example to post the above parameters to http://example.com I will definitely get the trick . Currently I'm using the following function to make the post : function processPicturesPage($title, $price, $numbedrooms, $description) { //Set the login parameters and initiate the Login process $fields = array( "changedImages" = "", "site_id" = "1", "posting_id" = "", "current_live_date" = "", "images_loaded" = "", "image_actions" = "", "title" = $title, ); foreach($fields as $key=$value) { $fields_string .= $key.'='.$value.'&'; } rtrim($fields_string,'&'); $URL = "http://www.example.com/cgi-bin/add_posting.pl"; return $this-processCurlrequest($URL, count($fields), $fields_string); } and in the processCurlrequest I have the curl options (cookies etc) and url .

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• ssh & script problem

  - by Nishanth

  I am having a strange problem while doing ssh. I am not sure where the term Unmatched ` is coming from. What I need to do is run script that logs information of what I am doing on the terminal to text file. After ssh - Sun Microsystems Inc. SunOS 5.8 Generic Patch October 2001 This is /etc/motd, last updated 3 Feb 2003. To learn about the UCS system and other aspects of computing at UL-Lafayette visit our home page http://helpdesk.louisiana.edu/ . For more information about system use, contact the Help Desk, Stephens Hall, Room 201, 482-5516 (x25516), during normal UL office hours; or send e-mail to [email protected]. ATTENTION: Unsecure Telnet and FTP will be turned off soon. Please make arrange to use ssh or sftp. Putty(telnet) and WinSCP(ftp) would be a good replacement. Unmatched ` d13.ucs.louisiana.edu% bash bash-2.04$ script -a myInformation.txt Script started, file is myInformation.txt Unmatched ` d13.ucs.louisiana.edu% When I tried to start the script with name myInformation.txt, you can see the message I am getting - Script started, file is myInformation.txt. But again I am getting that message Unmatched ` and is coming out of bash, as you can notice. What is the problem ? Any insights suggested would be very great. Note: file with name myInformation.txt is being created but nothing goes in to it. As I have even tried running certain commands like ls and then exited the script with ctrl+d. But when I open the file, nothing is there.

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• Delphi fastMM doesn't work with operator "IS"

  - by Joc02

  I work on Delphi project who interac with many other small libraries. I use FastMM4 and I would like work with complex classes passed on dll parameter. So for exemple I send my form to my dll. Into the dll I test the type of parameter with the operator "IS". But into the Dll the operator "IS" return always "false" Exemple library Dll; uses FastMM4, System.SysUtils, System.Classes, Vcl.Dialogs, Vcl.Forms; {$R *.res} procedure Complex(L : TObject);stdcall; begin if L is TForm then showmessage('Ok') else showmessage('Pas ok') ; if L is TCustomFrame then showmessage('Ok') else showmessage('Pas ok') end; exports Complex; begin end. And the call procedure TffsIsOperator.Button2Click(Sender: TObject); var MaDLL : THandle; Proc : procedure (l : TForm); begin try MaDLL := LoadLibrary(PChar('Dll.dll')); @Proc := GetProcAddress(MaDLL, 'Complex'); Proc(self); finally FreeLibrary(MaDLL); end; end;

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• mysql image disable print download

  - by Vish

  Hi, We use a Flex AIR client and a WAMP server. Tiff images are stored in MySQL. Currently, I can download the image from AIR client and it prompts for a download dialog. Things are fine till this point. We got a new requirement. Requirement is that only some users can print the image which gets downloaded. For other users, they should not be able to print the tiff image. Wondering how to accomplish this. One idea, not sure if its efficient, is to convert the image requested to pdf at the server side, disable print option there(hope there are API's available) and send back the pdf. Please let me know btter ideas. Also, is there a way to prevent file download dialog from popping up everytime the file is requested for download? Can we just get the file stream to the client and manipulate it to open with a particular viewer or write it to pdf... Please help.

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• Initialize listitem with blanks?

  - by VBartilucci

  Say I have a list made up of a listitem which contains three strings. I add a new listitem, and try to assign the values of said strings from an outside source. If one of those items is unassigned, the value in the listitem remains as null (unassigned). As a result I get an error if I try to assign that value to a field on my page. I can do a check on isNullOrEmpty for each field on the page, but that seems inefficient. I'd rather initialize the values to "" (Empty string) in the codebehind and send valid data. I can do it manually: ClaimPwk emptyNode = new ClaimPwk(); emptyNode.cdeAttachmentControl = ""; emptyNode.cdeRptTransmission = ""; emptyNode.cdeRptType = ""; headerKeys.Add(emptyNode); But I have some BIG list items, and writing that for those will get tedious. So is there a command, or just plain an easier way to initialize a listitem to empty string as opposed to null? Or has anyone got a better idea?

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• Escape whitespace in paths using nautilus script

  - by Tommy Brunn

  I didn't think this would be as tricky as it turned out to be, but here I am. I'm trying to write a Nautilus script in Python to upload one or more images to Imgur just by selecting and right clicking them. It works well enough with both single images and multiple images - as long as they don't contain any whitespace. In fact, you can upload a single image containing whitespace, just not multiple ones. The problem is that NAUTILUS_SCRIPT_SELECTED_FILE_PATHS returns all the selected files and directories as a space separated string. So for example, it could look like this: print os.environment['NAUTILUS_SCRIPT_SELECTED_FILE_PATHS'] /home/nevon/Desktop/test image.png /home/nevon/Desktop/test.jpg What I need is a way to -either in bash or Python- escape the spaces in the path - but not the spaces that delimit different items. Either that, or a way to put quotation marks around each item. The ultimate solution would be if I could do that in bash and then send the items as separate arguments to my python script. Something like: python uploader.py /home/nevon/Desktop/test\ image.png /home/nevon/Desktop/test.jpg I've tried RTFM'ing, but there doesn't seem to be a lot of good solutions for this. At least not that I've found. Any ideas?

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• Connections hanging on read()

  - by viraptor

  Hi, Short version: I've got a strange issue with a server accepting TCP connections. Even though there are normally some processes waiting, at some volume of connections it hangs. Long version: The server is written in Perl and binds a $srv socket with the reuse flag and listen == 5. Afterwards, it forks into 10 processes with a loop of $clt=$srv->accept(); do_processing($clt); $clt->shutdown(2); The client written in C is also very simple - it sends some lines, then receives all lines available and does a shutdown(sockfd, 2); There's nothing async going on and at the end both send and receive queues are empty (as reported by netstat). Connections last only ~20ms. All clients behave the same way, are the same implementation, etc. Now let's say I'm accepting X connections from client 1 and another X from client 2. Processes still report that they're idle all the time. If I add another X connections from client 3, suddenly the server processes start hanging just after accepting. The first blocking thing they do after accept(); is while (<$clt>) ... - but they don't get any data (on the first try already). Suddenly all 10 processes are in this state and do not stop waiting. On strace, the server processes seem to hang on read(), which makes sense. There are loads of connections in TIME_WAIT state belonging to that server (~100 when the problem starts to manifest), but this might be a red herring. What could be happening here?

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• Sending a list of mails with SmtpClient

  - by Malcolm Frexner

  I use SendCompletedEventHandler of SmtpClient when sending a list of emails. The SendCompletedEventHandler is only called when have already sent all emails in the list. I expexted, that SendCompletedEventHandler is called one an email is send. Is there something wrong in my code? public void SendAllNewsletters(List<string> recipients) { string mailText = "My Tex"; foreach(string recipient in recipients) { //if this loop takes 10min then the first call to //SendCompletedCallback is after 10min SendNewsletter(mailText,recipient); } } public bool SendNewsletter(string mailText , string emailaddress) { SmtpClient sc = new SmtpClient(_smtpServer, _smtpPort); System.Net.NetworkCredential SMTPUserInfo = new System.Net.NetworkCredential(_smtpuser, _smtppassword); sc.Credentials = SMTPUserInfo; sc.SendCompleted += new SendCompletedEventHandler(SendCompletedCallback); MailMessage mm = null; mm = new MailMessage(mailText, emailaddress); mm.IsBodyHtml = true; mm.Priority = MailPriority.Normal; mm.Subject = "Something"; mm.Body = "Something"; mm.SubjectEncoding = Encoding.UTF8; mm.BodyEncoding = Encoding.UTF8; //Mail string userState = emailaddress; sc.SendAsync(mm, userState); return true; } public void SendCompletedCallback(object sender, AsyncCompletedEventArgs e) { // Get the unique identifier for this asynchronous operation. String token = (string)e.UserState; if (e.Error != null) { _news.SetNewsletterEmailsisSent(e.UserState.ToString(), _newslettername, false, e.Error.Message); } else { _news.SetNewsletterEmailsisSent(e.UserState.ToString(), _newslettername, true, string.Empty); } }

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• how to return an error in an Ajax scenario from ASP.NET MVC action

  - by mohang

  I am using ASP.NET MVC with jquery. I have the following MVC Action that returns a partial page on Success. On Application Error, I am not sure what to send it for correctly handling it at the client side. public ActionResult LoadFilterSet(int filterSetId) { try { BreadCrumbManager bcManager = this.ResetBreadCrumbManager(this.BreadCrumbManagerID); GeneralHelper.LoadBreadCrumbManager(bcManager, filterSetId); ViewData["BreadCrumbManager"] = bcManager; return View("LoadFilterSet"); } catch (Exception ex) { return Content(""); } } Following is my jquery ajax call. Notice that I am checking for the data length to make sure there are no errors. Please suggest me a better way of doing this. $.ajax({ type: "GET", dataType: "html", async: true, data: ({ filterSetId: selectedId }), url: link, contentType: "text/html; charset=utf-8", success: function(data, textStatus) { if (data.length > 0) { // Clear the local filters first. clearLocalFilters(); $('td.selected-filters table.filters-display').append(data); } } });

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• Recursive problem...

  - by Chronos

  Guys, I'm new to java and multithreading..... and I have a following problem: I have two classes running in two different threads. Class A and Class B. Class A has the method "onNewEvent()". Once that method is invoked, it will ask class B to do some work. As soon as B finishes the work it invokes onJobDone() method of the class A. Now... here comes the problem... what I want is to create new job within onJobDone() method and to send it again to B. here is what I do (pseudo code) ... in the sequence of execution A.onNewEvent(){ //create job //ask B to do it B.do() } B.do{ // Do some stuff A.jobDone() } A.onJobDOne(){ B.do() //doItAgain // print message "Thank you for doing it" } The problem is... that message "Thank you for doing it" never gets printed... in fact, when onJobDone() method is invoked, it invokes B.do()... because B.do() is very fast, it invokes onJobDone() immediatly... so execution flow never comes to PRINT MESSAGE part of code... I suppose this is one of the nasty multithreading problems.... any help would be appreciated.

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• Polling servers at the same port - Threads and Java

  - by John

  Hi there. I'm currently busy working on an IP ban tool for the early versions of Call of Duty 1. (Apparently such a feature wasn't implemented in these versions). I've finished a single threaded application but it won't perform well enough for multiple servers, which is why I am trying to implement threading. Right now, each server has its own thread. I have a Networking class, which has a method; "GetStatus" -- this method is synchronized. This method uses a DatagramSocket to communicate with the server. Since this method is static and synchronized, I shouldn't get in trouble and receive a whole bunch of "Address already in use" exceptions. However, I have a second method named "SendMessage". This method is supposed to send a message to the server. How can I make sure "SendMessage" cannot be invoked when there's already a thread running in "GetStatus", and the other way around? If I make both synchronized, I will still get in trouble if Thread A is opening a socket on Port 99999 and invoking "SendMessage" while Thread B is opening a socket on the same port and invoking "GetStatus"? (Game servers are usually hosted on the same ports) I guess what I am really after is a way to make an entire class synchronized, so that only one method can be invoked and run at a time by a single thread. Hope that what I am trying to accomplish/avoid is made clear in this text. Any help is greatly appreciated.

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• Determine whether app is communicating with APNS sandbox or production environment

  - by goldierox

  I have push notifications set up in my app. I'm trying to determine whether the device token I've received from APNS in the application:didRegisterForRemoteNotificationsWithDeviceToken: method came from the sandbox or development environment. If I can distinguish which environment initialized the token, I'll be able to tell my server to which environment to send the push notification. I've tried using the DEBUG macro to determine this, but I've seen some strange behavior with this and don't trust it to be 100% correct. #ifdef DEBUG BOOL isProd = YES; #else BOOL isProd = NO; #endif Ideally, I'd be able to examine the aps-environment entitlement (value is Development or Production) in code, but I'm not sure if this is even possible. What's the proper way to determine whether your app is communicating with the APNS sandbox or production environments? I'm assuming that the server needs to know this in the first place. Please correct me if this is assumption is incorrect. Edited: Apple's documentation on Provider Communication with APNS details the difference between communicating with the sandbox and production. However, the documentation doesn't give information on how to be consistent with registering the token (from the iOS client app) and communicating with the server.

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• how to retreive the row value on click

  - by kumar

  var RowClick = function() { ("#Grid").click( var s = $("#Grid").jqGrid('getGridParam', 'selarrrow').toString(); alert(s); $("#showgrid").load('/Inventory/Products/List/' + s)); }; on RowClick i am trying to get the value of that row to send throw URL.. to access this Row value in my Actionresult method. but I am getting null value for the row? is this right what I am doing here? Thanks When I am doing somethign like this.. var value; $("#Grid").click(function(e) { var row = jQuery(e.target).parent(); value= row.attr("id"); }); var RowClick = function() { ("#Grid").click( $("#showgrid").load('/Inventory/Products/List/' + value)); }; on alert I am getting the row value perfectly but in my action result method Its showing me null value? Public Actionresult List(string value) { return View(); } can anybody help me out.. thanks

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• PHP file upload issue

  - by Varun

  I am working on a PHP based, ticket management system. While creating a ticket, one can upload an attachment. I want to put a limit (say 10 MB) per file upload. To implement this I plan the following- 1. In php.ini set post_max_size = 10M 2.In PHP script which receives the POST- Since the file is larger than post_max_size, $_FILES[] will be empty. But I can still check the content-length header and discard the upload, if size more than 10M. While testing this I tried uploading a file of 1 GB and analysed the http traffic and this is what I found. - the entire 1 GB data is first uploaded to a to the server temporarily and discarded once the http request completes. Though I couldn't exactly find out where the file was getting saved(as it was not there in the temporary directory in the server.), but my http traffic analyzer showed that the browser did send 1 GB data to the server. - the PHP script execution started only after completion of the http request(i.e after uploading the entire 1 GB) Now I have 2 concerns: a) People may exploit my server bandwidth by trying to upload large file, which I will have to discard anyways. b) Even worse, if someone starts uploading a huge file (say 100 GB), entire 100 GB data is first uploaded to the server temporarily, that means for that period, it will consume that much of memory on my server. What's the common solution for this. Am I missing something here?

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• iPhone: Does it ever make sense for an object to retain its delegate?

  - by randombits

  According to the rules of memory management in a non garbage collected world, one is not supposed to retain a the calling object in a delegate. Scenario goes like this: I have a class that inherits from UITableViewController and contains a search bar. I run expensive search operations in a secondary thread. This is all done with an NSOperationQueue and subclasses NSOperation instances. I pass the controller as a delegate that adheres to a callback protocol into the NSOperation. There are edge cases when the application crashes because once an item is selected from the UITableViewController, I dismiss it and thus its retain count goes to 0 and dealloc gets invoked on it. The delegate didn't get to send its message in time as the results are being passed at about the same time the dealloc happens. Should I design this differently? Should I call retain on my controller from the delegate to ensure it exists until the NSOperation itself is dealloc'd? Will this cause a memory leak? Right now if I put a retain on the controller, the crashes goes away. I don't want to leak memory though and need to understand if there are cases where retaining the delegate makes sense. Just to recap. UITableViewController creates an NSOperationQueue and NSOperation that gets embedded into the queue. The UITableViewController passes itself as a delegate to NSOperation. NSOperation calls a method on UITableViewController when it's ready. If I retain the UITableViewController, I guarantee it's there, but I'm not sure if I'm leaking memory. If I only use an assign property, edge cases occur where the UITableViewController gets dealloc'd and objc_msgSend() gets called on an object that doesn't exist in memory and a crash is imminent.

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• jquery events on input submit fields

  - by dfilkovi

  I have a problem with jquery submit button onclick and default event. What I want to do is replace an click event on submit button if it has one, and get an dialog box to show up, on clicking yes the dialog should start that default onclick event if submit button has one defined, if it hasn't than the default event should happen (button submits form), .submit() function does not work for me in any case cause I need to send this button also through a form and if button wasn't clicked .submit() sends form data without submit data. Bellow code has a problem, alert('xxx') is always called and it shouldn't, and on clicking yes button alert and dialog creation is called again, also if I remove alert button, I cannot call default submit button event (form submitting with a button). $('input.confirm').each(function() { var input = this; var dialog = document.createElement("div"); $(dialog).html('<p>AREYOUSHURE</p>'); $(input).click(function(event) { event.preventDefault(); var buttons = {}; buttons['NO'] = function() { $(this).dialog("close"); }; buttons['YES'] = function() { $(input).trigger('click'); $(this).dialog("close"); }; $(dialog).dialog( { autoOpen: false, width: 200, modal: true, resizable: false, buttons: buttons }); $(dialog).dialog('open'); return false; }); }); <form method="post" action=""> <input type="hidden" value="1" name="eventId" /> <input type="submit" value="Check" name="checkEvent" class="confirm" onclick="alert('xxx');" /> </form>

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